Responses of two scleractinian corals to cobalt pollution and ocean acidification.
International audience The effects of ocean acidification alone or in combination with warming on coral metabolism have been extensively investigated, whereas none of these studies consider that most coral reefs near shore are already impacted by other natural anthropogenic inputs such as metal poll...
Published in: | PLOS ONE |
---|---|
Main Authors: | , , , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2015
|
Subjects: | |
Online Access: | https://hal.science/hal-02554391 https://doi.org/10.1371/journal.pone.0122898 |
id |
ftunivnantes:oai:HAL:hal-02554391v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
ACL STYLOPHORA-PISTILLATA FERTILIZATION SUCCESS CLIMATE-CHANGE NEW-CALEDONIA CLADOCORA-CAESPITOSA CARBONATE CHEMISTRY METAL CONTAMINATION PARTIAL-PRESSURE SYMBIOTIC ALGAE HEAVY-METALS [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
ACL STYLOPHORA-PISTILLATA FERTILIZATION SUCCESS CLIMATE-CHANGE NEW-CALEDONIA CLADOCORA-CAESPITOSA CARBONATE CHEMISTRY METAL CONTAMINATION PARTIAL-PRESSURE SYMBIOTIC ALGAE HEAVY-METALS [SDE.BE]Environmental Sciences/Biodiversity and Ecology Biscéré, T Rodolfo-Metalpa, R Lorrain, Anne Chauvaud, Laurent Thébault, Julien Clavier, Jacques Houlbrèque, F Responses of two scleractinian corals to cobalt pollution and ocean acidification. |
topic_facet |
ACL STYLOPHORA-PISTILLATA FERTILIZATION SUCCESS CLIMATE-CHANGE NEW-CALEDONIA CLADOCORA-CAESPITOSA CARBONATE CHEMISTRY METAL CONTAMINATION PARTIAL-PRESSURE SYMBIOTIC ALGAE HEAVY-METALS [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience The effects of ocean acidification alone or in combination with warming on coral metabolism have been extensively investigated, whereas none of these studies consider that most coral reefs near shore are already impacted by other natural anthropogenic inputs such as metal pollution. It is likely that projected ocean acidification levels will aggravate coral reef health. We first investigated how ocean acidification interacts with one near shore locally abundant metal on the physiology of two major reef-building corals: Stylophora pistillata and Acropora muricata. Two pH levels (pH(T) 8.02; pCO(2) 366 mu atm and pH(T) 7.75; pCO(2) 1140 mu atm) and two cobalt concentrations (natural, 0.03 mu g L-1 and polluted, 0.2 mu g L-1) were tested during five weeks in aquaria. We found that, for both species, cobalt input decreased significantly their growth rates by 28% while it stimulated their photosystem II, with higher values of rETR(max) (relative Electron Transport Rate). Elevated pCO(2) levels acted differently on the coral rETR(max) values and did not affect their growth rates. No consistent interaction was found between pCO(2) levels and cobalt concentrations. We also measured in situ the effect of higher cobalt concentrations (1.06 +/- 0.16 mu g L-1) on A. muricata using benthic chamber experiments. At this elevated concentration, cobalt decreased simultaneously coral growth and photosynthetic rates, indicating that the toxic threshold for this pollutant has been reached for both host cells and zooxanthellae. Our results from both aquaria and in situ experiments, suggest that these coral species are not particularly sensitive to high pCO(2) conditions but they are to ecologically relevant cobalt concentrations. Our study reveals that some reefs may be yet subjected to deleterious pollution levels, and even if no interaction between pCO(2) levels and cobalt concentration has been found, it is likely that coral metabolism will be weakened if they are subjected to additional threats such as ... |
author2 |
Ecologie marine tropicale des océans Pacifique et Indien (ENTROPIE Nouvelle-Calédonie ) Institut de Recherche pour le Développement (IRD Nouvelle-Calédonie )-Ifremer - Nouvelle-Calédonie Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de la Nouvelle-Calédonie (UNC) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut de Recherche pour le Développement (IRD) |
format |
Article in Journal/Newspaper |
author |
Biscéré, T Rodolfo-Metalpa, R Lorrain, Anne Chauvaud, Laurent Thébault, Julien Clavier, Jacques Houlbrèque, F |
author_facet |
Biscéré, T Rodolfo-Metalpa, R Lorrain, Anne Chauvaud, Laurent Thébault, Julien Clavier, Jacques Houlbrèque, F |
author_sort |
Biscéré, T |
title |
Responses of two scleractinian corals to cobalt pollution and ocean acidification. |
title_short |
Responses of two scleractinian corals to cobalt pollution and ocean acidification. |
title_full |
Responses of two scleractinian corals to cobalt pollution and ocean acidification. |
title_fullStr |
Responses of two scleractinian corals to cobalt pollution and ocean acidification. |
title_full_unstemmed |
Responses of two scleractinian corals to cobalt pollution and ocean acidification. |
title_sort |
responses of two scleractinian corals to cobalt pollution and ocean acidification. |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.science/hal-02554391 https://doi.org/10.1371/journal.pone.0122898 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE https://hal.science/hal-02554391 PLoS ONE, 2015, 10 (4), pp.e0122898. ⟨10.1371/journal.pone.0122898⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0122898 hal-02554391 https://hal.science/hal-02554391 doi:10.1371/journal.pone.0122898 IRD: fdi:010064138 PUBMEDCENTRAL: PMC4388502 |
op_doi |
https://doi.org/10.1371/journal.pone.0122898 |
container_title |
PLOS ONE |
container_volume |
10 |
container_issue |
4 |
container_start_page |
e0122898 |
_version_ |
1766156660850556928 |
spelling |
ftunivnantes:oai:HAL:hal-02554391v1 2023-05-15T17:50:05+02:00 Responses of two scleractinian corals to cobalt pollution and ocean acidification. Biscéré, T Rodolfo-Metalpa, R Lorrain, Anne Chauvaud, Laurent Thébault, Julien Clavier, Jacques Houlbrèque, F Ecologie marine tropicale des océans Pacifique et Indien (ENTROPIE Nouvelle-Calédonie ) Institut de Recherche pour le Développement (IRD Nouvelle-Calédonie )-Ifremer - Nouvelle-Calédonie Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de la Nouvelle-Calédonie (UNC) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut de Recherche pour le Développement (IRD) 2015 https://hal.science/hal-02554391 https://doi.org/10.1371/journal.pone.0122898 en eng HAL CCSD Public Library of Science info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0122898 hal-02554391 https://hal.science/hal-02554391 doi:10.1371/journal.pone.0122898 IRD: fdi:010064138 PUBMEDCENTRAL: PMC4388502 ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE https://hal.science/hal-02554391 PLoS ONE, 2015, 10 (4), pp.e0122898. ⟨10.1371/journal.pone.0122898⟩ ACL STYLOPHORA-PISTILLATA FERTILIZATION SUCCESS CLIMATE-CHANGE NEW-CALEDONIA CLADOCORA-CAESPITOSA CARBONATE CHEMISTRY METAL CONTAMINATION PARTIAL-PRESSURE SYMBIOTIC ALGAE HEAVY-METALS [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2015 ftunivnantes https://doi.org/10.1371/journal.pone.0122898 2023-02-08T06:55:03Z International audience The effects of ocean acidification alone or in combination with warming on coral metabolism have been extensively investigated, whereas none of these studies consider that most coral reefs near shore are already impacted by other natural anthropogenic inputs such as metal pollution. It is likely that projected ocean acidification levels will aggravate coral reef health. We first investigated how ocean acidification interacts with one near shore locally abundant metal on the physiology of two major reef-building corals: Stylophora pistillata and Acropora muricata. Two pH levels (pH(T) 8.02; pCO(2) 366 mu atm and pH(T) 7.75; pCO(2) 1140 mu atm) and two cobalt concentrations (natural, 0.03 mu g L-1 and polluted, 0.2 mu g L-1) were tested during five weeks in aquaria. We found that, for both species, cobalt input decreased significantly their growth rates by 28% while it stimulated their photosystem II, with higher values of rETR(max) (relative Electron Transport Rate). Elevated pCO(2) levels acted differently on the coral rETR(max) values and did not affect their growth rates. No consistent interaction was found between pCO(2) levels and cobalt concentrations. We also measured in situ the effect of higher cobalt concentrations (1.06 +/- 0.16 mu g L-1) on A. muricata using benthic chamber experiments. At this elevated concentration, cobalt decreased simultaneously coral growth and photosynthetic rates, indicating that the toxic threshold for this pollutant has been reached for both host cells and zooxanthellae. Our results from both aquaria and in situ experiments, suggest that these coral species are not particularly sensitive to high pCO(2) conditions but they are to ecologically relevant cobalt concentrations. Our study reveals that some reefs may be yet subjected to deleterious pollution levels, and even if no interaction between pCO(2) levels and cobalt concentration has been found, it is likely that coral metabolism will be weakened if they are subjected to additional threats such as ... Article in Journal/Newspaper Ocean acidification Université de Nantes: HAL-UNIV-NANTES PLOS ONE 10 4 e0122898 |